The 2SC1674-K is an NPN epitaxial silicon transistor manufactured by NEC (now Renesas Electronics). This transistor is designed for low-noise amplifier applications in the VHF and UHF bands, as well as oscillator circuits.

Applications:

• VHF/UHF low-noise amplifiers
• Oscillator circuits
• Mixer circuits
• RF front-end circuits in communication equipment
• High-frequency amplification stages

Features:

• NPN epitaxial silicon transistor
• Low noise figure (typically around 1.8 dB at 200 MHz)
• High gain-bandwidth product (fT typically 6.5 GHz)
• Excellent linearity
• Small signal amplification

Benefits:

• Enables high-sensitivity reception in VHF/UHF receivers.
• Provides stable oscillation in oscillator circuits.
• Minimizes unwanted noise in amplified signals.
• Offers reliable performance in high-frequency applications.
• Suitable for compact circuit designs due to its small size.

Additional Details:

Technical Specifications:

• Polarity: NPN
• Collector-Emitter Voltage (VCEO): 20V
• Collector-Base Voltage (VCBO): 30V
• Emitter-Base Voltage (VEBO): 3V
• Collector Current (IC): 30mA
• Collector Dissipation (PC): 200mW
• Transition Frequency (fT): 6.5 GHz (typical)
• Noise Figure (NF): 1.8 dB (typical at 200 MHz)
• Package: SOT-23

Operating Conditions:

The 2SC1674-K is typically operated with a collector current in the range of 5mA to 15mA for optimal noise performance. Proper biasing is crucial for achieving the desired gain and linearity in amplifier circuits.

Precautions:

Electrostatic discharge (ESD) can damage the transistor. Handle with care and use appropriate ESD protection measures during handling and soldering.